89 lines
3.4 KiB
C
89 lines
3.4 KiB
C
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/*
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node.h -- header for node.c
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Copyright (C) 2001-2002 Guus Sliepen <guus@sliepen.warande.net>,
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2001-2002 Ivo Timmermans <itimmermans@bigfoot.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id: node.h,v 1.1.2.13 2002/03/19 22:48:25 guus Exp $
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*/
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#ifndef __TINC_NODE_H__
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#define __TINC_NODE_H__
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#include <avl_tree.h>
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#include "subnet.h"
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#include "connection.h"
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typedef struct node_status_t {
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int active:1; /* 1 if active.. */
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int validkey:1; /* 1 if we currently have a valid key for him */
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int waitingforkey:1; /* 1 if we already sent out a request */
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int visited:1; /* 1 if this node has been visited by one of the graph algorithms */
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int reachable:1; /* 1 if this node is reachable in the graph */
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int indirect:1; /* 1 if this node is not directly reachable by us */
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int unused:26;
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} node_status_t;
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typedef struct node_t {
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char *name; /* name of this node */
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long int options; /* options turned on for this node */
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sockaddr_t address; /* his real (internet) ip to send UDP packets to */
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char *hostname; /* the hostname of its real ip */
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struct node_status_t status;
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const EVP_CIPHER *cipher; /* Cipher type for UDP packets */
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char *key; /* Cipher key and iv */
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int keylength; /* Cipher key and iv length*/
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const EVP_MD *digest; /* Digest type for MAC */
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int maclength; /* Length of MAC */
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int compression; /* Compressionlevel, 0 = no compression */
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list_t *queue; /* Queue for packets awaiting to be encrypted */
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struct node_t *nexthop; /* nearest node from us to him */
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struct node_t *via; /* next hop for UDP packets */
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avl_tree_t *subnet_tree; /* Pointer to a tree of subnets belonging to this node */
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avl_tree_t *edge_tree; /* Edges with this node as one of the endpoints */
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struct connection_t *connection; /* Connection associated with this node (if a direct connection exists) */
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unsigned int sent_seqno; /* Sequence number last sent to this node */
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unsigned int received_seqno; /* Sequence number last received from this node */
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} node_t;
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extern struct node_t *myself;
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extern avl_tree_t *node_tree;
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extern avl_tree_t *node_udp_tree;
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extern void init_nodes(void);
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extern void exit_nodes(void);
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extern node_t *new_node(void);
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extern void free_node(node_t *);
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extern void node_add(node_t *);
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extern void node_del(node_t *);
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extern node_t *lookup_node(char *);
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extern node_t *lookup_node_udp(sockaddr_t *);
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extern void dump_nodes(void);
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#endif /* __TINC_NODE_H__ */
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